The Best Convertible Car Seats for Small Cars

When you have triplets, you are likely going to be struggling to find a way to fit them all in your small car! Many convertible car seats just aren’t meant to fit three kids in one row, and who who wants to buy a new car when there are already a hundred other new baby expenses? Instead of upgrading your car, you can easily upgrade your car seats. Here are the best convertible car seats for small cars that you and your triplets will love.

What is a Convertible Car Seat?

A convertible car seat is designed for use from birth until a fairly high weight, typically 40 to 80 pounds. It will both rear face and forward face, and some convert to high back boosters after your child outgrows the weight limit. Convertible car seats are not meant to be taken out and carried around like you would with an infant seat.

How did you pick the best car seats for three across?

When looking for car seats that would work in our small car, we used the following criteria. We made sure the car seat was safety tested with high ratings for both infants and toddlers. We looked only for seats that would fit three across even in small cars. We made sure the seats were a good value and would last for many years.

How do I measure for a narrow car seat?

If you need to fit triplets together in one small car, you must look for a narrow seat. Before making your purchase, measure the backseat of your car to see how much room you have to work with. Then, measure your children as well. You need to make sure they fit within the parameters that the car seat can accommodate!

The 5 Narrowest Seats on the Market

We have done a lot of research so that you don’t have to. Check out the following reviews to learn more about the best convertible car seats for small cars.

1. Clek Foonf 2017 Convertible Car Seat

The Foonf may have a silly sounding name, but it is one impressive convertible car seat. Made by Clek, a world class company that manufactures all seats in the USA, the Foonf is long lasting and extremely safe. It was created to fit a niche market for those who need a slim chair, but also want style, safety, and long lasting durability.

The Foonf will fit three across in almost any car, even compact cars. It installs like a dream, and it comes in some super cute colors that you won’t find in other seats on the market, like mint green and lilac. The fabric is a special blend, made for easy cleanup of spills. Since you will be able to use the Foonf for an exceptional amount of time, being able to clean it without much work is essential.

Pros:

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High safety rating

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Lasts from infancy through age 4+

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Colorful options

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Easy to install and reinstall

Cons:

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Expensive

Value Note

Here’s a little secret: the 2017 Foonf is the newest available, but it isn’t all that different from earlier versions. Look around, and you might be able to find a 2016 for a steal! That makes a big difference for this seat, which is on the expensive side even for a convertible.

The Foonf comes with a one year warranty, to cover any possible issues. If you have the extra cash to spend, this seat will not disappoint. Buying it on amazon will snag you free shipping, and free returns (just in case it doesn’t work ou!).

Clek Foonf 2017 Convertible Car Seat

2. Combi Coccoro Convertible Car Seat

The Combi Coccoro is the slimmest seat on our list, practically promised to fit three across for your triplets, no matter how small your car is. Created by the Combi company, originally of Japan, this seat was designed to fit into small spaces while costing much less than some other luxury seats available today.

Features:

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15.5” across at widest point

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Weighs 14.3 lbs

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Fits children 3 - 40 lbs

The Coccoro is lightweight and easy to install. It also comes in a nice variety of color combinations. It can fit the smallest of babies, so it is great for those little ones who were born early. The upper weight limit of 40 lbs means that this seat probably won’t last through all of the preschool years, unless your child is smaller than average.

Pros:

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Great for smaller kids and infants

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Rear and forward facing capabilities

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Comes with an infant positioning insert

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Latch system and 5 point harness are easy to use

Cons:

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Not good for larger/taller children

Value Note

Looking for a bargain? Check out the different colors available. Sometimes you can find the less popular colors at a significant discount if you look at all the options.

If you need replacement parts, they are easy to find through the Combi website, and this seat is under a one year warranty as well. The best place to buy is Amazon, where you can score free shipping and free returns on most color combos!

Combi Coccoro Convertible Car Seat

​​​​​​​3. Britax USA Marathon ClickTight Convertible Car Seat

Britax is a well known brand, famous for its affordability and durability. This convertible seat will fit three across in all but the smallest of cars.

Features:

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18.5” across at widest point

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Weighs 28.4 lbs

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Fits children 5 - 65 lbs

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Easy to use ClickTight System helps get a secure install every time

The Marathon is the largest seat on our list, so definitely double check your car measurements. This seat is very safe, since it offers a unique installation system that is user-error free. Most car seats are not installed correctly, which is why this one is safer than average.

This seat may be more expensive than some, but it should last you and your family for many years. If you are looking for a great price, also check out Target, which sells it for a great price and offers free shipping! Don’t forget there is a one year warranty to cover defects.

Britax USA Marathon ClickTight Convertible Car Seat

4. Cosco Mighty Fit 65 DX

This Cosco seat is an excellent choice for the budget shopper, and one of the best car seats for three across installation.

Features:

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17” across at widest point

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Weighs 14 lbs

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Fits children 5- 65 lbs

The great thing about the Mighty Fit is that not only is it narrow, but it is also compact. Drivers and passengers will be able to have plenty of legroom, since this car seat doesn’t take up a ton of space. For such an inexpensive seat, it really will last you a long time

Pros:

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Stylish design and colors

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Very affordable

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Machine washable and dryer safe

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Side impact protection

Cons:

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Tricky to install

Value Note

This is a fairly new seat, so it might be hard to find it on sale. However the low price means that shouldn’t be much of an issue.

If you buy this seat on Amazon you will score free shipping both ways, and you have four cute and colorful options to choose from. There is also a standard one year warranty on this product.

Cosco Mighty Fit 65 DX

5. Clek Fllo 2017 Convertible Car Seat

The second Clek car seat to make it on our list, because their products really are that good! The Fllo was designed to be a little more affordable than it’s counterpart, but it fits just as well when you need to have a narrow car seat

The Fllo is very similar to the Foonf, but costs less and can be easier to install. It is also shorter than it’s sister seat, so it gives parents slightly more leg room. It comes in a variety of bright colors that will fit any personality.

Pros:

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High safety rating

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Lasts from infancy through age 4+

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Colorful options

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Easy to install and reinstall

Cons:

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Expensive

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Must buy accessories for infants

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Hard to get a good recline

Value Note

If you are looking at a Clek car seat, and you need to save some cash, the Fllo is a good choice. Don’t overlook the fact that this seat can be used for 4+ years, which will save you money in the long run.

The Fllo comes with a one year warranty. The best place to purchase the Clek Fllo is on Amazon, where you will have hassle free shipping and returns.

Clek Fllo 2017 Convertible Car Seat

If you need a narrow car seat, this list has you covered! In the end, the Foonf offers the most features, and the Cosco will give you more bang for your buck. Overall, if you must find the best convertible car seats for small cars, you can’t go wrong with any of these choices!